Drug Interactions between aminolevulinic acid and moxifloxacin / triamcinolone

Moxifloxacin and other medications in its class can cause tendinitis and tendon rupture, and the risk may be increased when combined with a steroid such as triamcinolone. Older adults over 60 years of age and those who have received a kidney, heart, and/or lung transplant may be particularly susceptible. Tendon rupture can occur during or up to several months after finishing moxifloxacin treatment and may require surgery or result in prolonged disability. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. Stop taking moxifloxacin and call your doctor immediately if you experience pain, swelling, or inflammation of a tendon area such as the back of the ankle, shoulder, biceps, hand, or thumb. You should also avoid exercise or use of the affected area until further instruction from your doctor. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Aminolevulinic acid sensitizes your skin to bright lights, and combining it with other medications that can also have this effect (i.E., photosensitivity) such as moxifloxacin may increase the risk of a severe sunburn. In general, it is recommended that other potentially photosensitizing medications be avoided for 24 hours before and after taking aminolevulinic acid. There have also been suggestions to avoid these medications for up to 2 weeks afterwards, although it may not be feasible to interrupt some treatments for that long, especially if they are medically necessary. Check with your doctor to see if you should temporarily withhold any of your medications before and after taking aminolevulinic acid. Following treatment, you should avoid exposure of the eyes and skin to sunlight or bright indoor lights for 48 hours. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.